1877.] 99 [Hoffman. 



GEOMYDiE. 



25. Thomomys rufescens Maxim. Fort Union Gopher. 

 Mau-i'-tcha. 



Rarely found. Appears more common in the valleys of the Yel- 

 lowstone and Upper Missouri. 



HYSTRICIDiE. 



26. Erethizon dorsatus var. epizanthus All. Porcupine. 

 Pa-hm'. 



Common in the timbered bottoms on Oak Creek. This animal is 

 rapidly disappearing on account of the Indians, who prize the quills 

 very highly, and employ them in the ornamentation of almost all 

 wearing apparel, and trinkets, pouches, etc. The only living speci- 

 mens were those domesticated by the enlisted men, and they are dis- 

 agreeable pets on account of the odor. 



MURIM2. 



27. Mus musculus Linn. Common Mouse. Ki-tun-ka-darc. 



This animal made its appearance soon after the Post was estab- 

 lished, and they have steadily continued to increase since that time. 

 Specimens have been found in the wood-choppers cabins, forty miles 

 northward, which were no doubt carried there in cases of goods or 

 with sacks of grain. 



28. Fiber zibethicus Cuv. Muskrat. Sink-pe'. 



Not rare, excepting in the immediate vicinity of the Agency. 



LEPonnm 



29. Lepus campestris Bach. Prairie Hare. Mas-tin'-tcha. 

 Scattered over the prairie during summer, but as the cold weather 



sets in they are forced down into the bottom lands, where they are 

 often secured for the table. » 



30. Lepus callotis Wagl. Jack Rabbit. 



Of common occurrence, though seldom found very near the 

 Agency. 



CERVID^E. 



31. Cervus canadensis Erxl. Elk. Wapiti. Ech-a'-ka. 

 Saw several about forty miles below Grand River, but they have 



not been found near the Agency since 1869. The Indians often 

 bring in fine sets of antlers, which are secured along the tributaries 

 of the Yellowstone. 



